diff --git a/install.sh b/install.sh
index 3b429c1..e7944a5 100644
--- a/install.sh
+++ b/install.sh
@@ -180,7 +180,7 @@ basic_optimization(){
 port_alterid_set(){
     read -p "请输入连接端口（default:443）:" port
     [[ -z ${port} ]] && port="443"
-    read -p "请输入alterID（default:2）:" alterID
+    read -p "请输入alterID（default:2 仅允许填数字）:" alterID
     [[ -z ${alterID} ]] && alterID="2"
 }
 modify_port_UUID(){
diff --git a/install_h2.sh b/install_h2.sh
index a9ea6a8..31d50c6 100644
--- a/install_h2.sh
+++ b/install_h2.sh
@@ -177,7 +177,7 @@ dependency_install(){
 port_alterid_set(){
     stty erase '^H' && read -p "请输入连接端口（default:443）:" port
     [[ -z ${port} ]] && port="443"
-    stty erase '^H' && read -p "请输入alterID（default:2）:" alterID
+    stty erase '^H' && read -p "请输入alterID（default:2 仅允许填数字）:" alterID
     [[ -z ${alterID} ]] && alterID="2"
 }